CATEGORY

No standard library 11,888 crates

Data as of 2026-07-25 (crates.io database dump, timestamp 2026-07-25T02:00:36Z). Source: crates.io · db-dump.tar.gz · methodology & corrections.

squintEncode sequential integer ids as random looking strings5,454MIT OR Apache-2.0 Cryptography Encoding macbinaryMacBinary and resource fork parser5,451Apache-2.0 Encoding No standard library type-varianceMarker traits for subtype variance5,450MIT No standard library Rust patterns embiveEmbive is an interpreter/virtual-machine that leverages RISC-V bytecode, enabling sandboxed code execution on tiny devices (e.g.…5,448MIT OR Apache-2.0 Embedded development No standard library libosLibrary OS5,446Apache-2.0 No standard library word_filter_codegenUtilities for generating `WordFilter`s at compile-time.5,445MIT OR Apache-2.0 Development tools::Build Utils Game development gpp-solverA small hybrid push-pull solver/planner that has the best of both worlds5,442BSD-2-Clause Algorithms No standard library esp8266-wifi-serialA driver to work with the esp8266 module over the serial port.5,442MIT OR Apache-2.0 Embedded development Network programming wadiA device interface for wasi5,441MIT OR Apache-2.0 No standard library WebAssembly lsm6dsoxPlatform-agnostic embedded-hal driver for the ST LSM6DSOX iNEMO inertial module5,435OLFL-1.3 Embedded development No standard library firehazardUnopinionated low level API bindings focused on soundness, safety, and stronger types over raw FFI.5,433Apache-2.0 OR MIT API bindings No standard library ntex-httparseA tiny, safe, speedy, zero-copy HTTP/1.x parser.5,433MIT OR Apache-2.0 Network programming No standard library lazy-pipeChain closures into a pipeline5,431MIT No standard library arraylibTools for working with arrays5,426MIT No standard library Rust patterns atsams70j20Peripheral access API for ATSAMS70J20 microcontrollers from Atmel/Microchip (generated using svd2rust)5,4250BSD Embedded development Hardware support lis2dw12A no_std compatible Rust driver for the low power ST 3-Axis MEMS 14-bit accelerometer LIS2DW12 using the SPI bus in async or…5,422Apache-2.0 OR MIT Embedded development No standard library acpica-bindingsIncomplete rust bindings to Intel's ACPICA kernel subsystem5,421MIT API bindings Hardware support opus-static-sysRust bindings to the reference Opus library (libopus)5,421MIT Encoding External FFI bindings ip_setFast IP range matching with binary search / 基于二分查找的高效IP范围匹配5,416MulanPSL-2.0 Algorithms Data structures iis2mdcSimple driver for ST iis2mdc sensor5,415MIT Embedded development Hardware support hampelSequential outlier detection and removal using Hampel identifiers5,415MIT OR Apache-2.0 Algorithms No standard library ab1024-egaAn embedded-hal SPI driver for AB1024-EGA/AC057TC1 (as used in Inkplate 6 COLOR)5,414LGPL-3.0-or-later Embedded development Hardware support libecvrfA ECVRF that's friendly with EVM, based on curve secp256k1 and keccak2565,414Apache-2.0 Algorithms Cryptography atsams70n20Peripheral access API for ATSAMS70N20 microcontrollers from Atmel/Microchip (generated using svd2rust)5,4020BSD Embedded development Hardware support atsams70q20Peripheral access API for ATSAMS70Q20 microcontrollers from Atmel/Microchip (generated using svd2rust)5,4010BSD Embedded development Hardware support codasMarkdown-defined data that serialize to and from bytes on any platform—from web apps to robots!5,401MIT Encoding Network programming clia-timeA personal temporary time crate, using tz-rs to get local offset.5,396MIT OR Apache-2.0 Date and time No standard library gp2y0e02bA rust driver for the GP2Y0E02B (SHARP I2C Distance Measuring Sensor, 4-50cm)5,396MIT Embedded development Hardware support embedded-async-helpers`static` friendly helpers for async on embedded5,394MIT OR Apache-2.0 Data structures No standard library ch32v0Device support crates for CH32V0 devices5,385MIT/Apache-2.0 Embedded development Hardware support flex-allocData structures with extra flexible storage5,384MIT OR Apache-2.0 Data structures Memory management atsams70q19Peripheral access API for ATSAMS70Q19 microcontrollers from Atmel/Microchip (generated using svd2rust)5,3810BSD Embedded development Hardware support indexed_arenaA simple, index-based arena without deletion.5,378MIT Data structures No standard library nrf-softdevice-s113Low-level bindings for the Nordic nRF SoftDevice S1135,377non-standard Embedded development Hardware support atsams70j19Peripheral access API for ATSAMS70J19 microcontrollers from Atmel/Microchip (generated using svd2rust)5,3750BSD Embedded development Hardware support panic-serialPrint panics on serial port5,374MIT Embedded development No standard library test-dalek-docsA pure-Rust implementation of group operations on ristretto255 and Curve255195,369BSD-3-Clause Cryptography No standard library wookong-soloWookong Solo driver crate5,367MIT/Apache-2.0 Algorithms No standard library max553xDriver for the 12-bit MAX5532–MAX5535 DACs.5,364MIT OR Apache-2.0 Embedded development Hardware support fs1027-dg-halFS1027-DG Gas Flow Sensor Module driver for no_std embedded-hal5,363MIT OR Apache-2.0 Embedded development Hardware support rfc2580An (enhanced) implementation of RFC 25805,363MIT OR Apache-2.0 No standard library rppal-dht11Raspberry Pi Rust driver for the DHT11 temperature and humidity sensor.5,362MIT OR Apache-2.0 Embedded development Hardware support microdspDSP algorithms and utilities. Performant, embedded friendly and no_std compatible.5,348MIT Embedded development Multimedia::Audio curve25519-entropicA pure-Rust implementation of group operations on ristretto255 and Curve255195,347BSD-3-Clause Cryptography No standard library mips-mcu-allocA heap allocator for MIPS based microcontrollers5,346MIT OR Apache-2.0 Embedded development Hardware support serialioSerial high level operation input/output driver5,345Apache-2.0 Embedded development Hardware support atsams70j21Peripheral access API for ATSAMS70J21 microcontrollers from Atmel/Microchip (generated using svd2rust)5,3410BSD Embedded development Hardware support stivale[DEPRECATED] A crate for parsing qloader2 and tomatboot's stivale2 structures5,339MIT/Apache-2.0 No standard library array-litMacros for array and `Vec` literals with superpowers5,337MIT OR Apache-2.0 No standard library Rust patterns erroreLibrary for error handling and tracing5,336MIT OR Apache-2.0 No standard library Rust patterns zkp-logging-allocatorWrapper around the system allocator that logs large allocations5,334Apache-2.0 Algorithms Memory management page-table-armA library of arm page table5,334MIT No standard library zstZero-sized generic type with the associated type exposing the type parameter5,333MIT OR Apache-2.0 Memory management No standard library aps490_pfpu2_miniControl software for PFPU2 automated brain detection system5,333Apache-2.0 Embedded development No standard library stm32f446-halHAL for the STM32F446 family of microcontrollers, forked from the one for STM32F4295,326MIT OR Apache-2.0 Embedded development Hardware support atsams70q21Peripheral access API for ATSAMS70Q21 microcontrollers from Atmel/Microchip (generated using svd2rust)5,3260BSD Embedded development Hardware support async-gcodeAn async gcode parser for no_std targets.5,324MIT Asynchronous Embedded development atsams70n19Peripheral access API for ATSAMS70N19 microcontrollers from Atmel/Microchip (generated using svd2rust)5,3240BSD Embedded development Hardware support esp_idf_loggerA logger that logs with ESP-IDF5,322MIT Development tools::Debugging Embedded development scopefnScope functions for Rust5,316MIT No standard library Rust patterns neokey_trinkeyBoard Support crate for the Adafruit Neokey Trinkey5,316MIT OR Apache-2.0 Embedded development Hardware support once_mutSafe mutable reference to static variable that can be obtained only once5,315MIT/Apache-2.0 Concurrency Data structures pink-erased-serdeType-erased Serialize and Serializer traits5,312MIT OR Apache-2.0 Encoding No standard library correlation_flowOptical flow measurement with image phase correlation5,312BSD-3-Clause Computer vision Embedded development magbaMagnetic computation library for Rust5,307BSD-3-Clause No standard library Science abootimg-oxideAndroid boot image (boot.img) parser5,305MIT OR Apache-2.0 No standard library Parser implementations sgpc3Rust driver for the Sensirion SGPC3 gas sensor.5,304MIT OR Apache-2.0 Embedded development Hardware support dynsequenceSequence-Like data-structure for storing dynamically sized types5,303MIT OR Apache-2.0 Data structures No standard library trait-cast-macrosProc-macro implementation for the 'trait-cast' crate.5,301MIT OR Apache-2.0 No standard library Rust patterns ocsp-x509DEPRECATED. Use RustCrypto's x509-ocsp.5,297Apache-2.0 OR MIT Cryptography Data structures elliptic-curve-flowGeneral purpose Elliptic Curve Cryptography (ECC) Modified for use with the flow-rust-sdk package5,295Apache-2.0 OR MIT Cryptography No standard library precog_iterAn iterator adapter that returns the equivalent of `(iter.next(), iter.peek())`.5,294MIT OR Apache-2.0 No standard library Rust patterns es-wifi-driverDriver for the es-wifi adapter from Inventek.5,290Apache-2.0 Embedded development No standard library mipsLow-level abstraction of MIPS processors5,277MIT Embedded development Hardware support ref_countEfficient, low-level asynchronous synchronization for real-time and embedded systems5,274MIT OR Apache-2.0 Asynchronous Concurrency ma734Platform agnostic Rust driver for the MA734, digital angle sensor that detects the absolute angular position of a permanent magnet5,274MIT/Apache-2.0 Embedded development Hardware support ch32v103-halWCH CH32v103 MCU HAL5,272MIT Embedded development No standard library wasefire-syncPortable non-blocking mutex5,272Apache-2.0 Concurrency No standard library kc11b04Driver for the KC11B04 4-button analog keypad5,270MIT OR Apache-2.0 Embedded development Hardware support kqueue2-sysLow-level kqueue interface for BSDs and MacOS5,269MIT External FFI bindings Filesystem thermal-printAn almost fully featured, no-std-compatible embedded-hal driver for the CSN-A2 thermal printer5,269GPL-3.0+Embedded development Hardware support embedded-bacnetA bacnet library for embedded systems (no_std)5,268Apache-2.0 Embedded development Network programming uf-crsfA `no_std` Rust library for parsing the TBS Crossfire protocol, designed for embedded environments5,268Apache-2.0 Embedded development No standard library stepgenStepper motor speed ramp generator5,267MIT/Apache-2.0 Embedded development No standard library bufkitMemory-backed buffer toolkit with Chunk/ChunkMut traits for predictable, explicit, and retry-friendly access; ideal for Sans-I/O…5,267MIT OR Apache-2.0 Data structures Encoding flip-uiRust integration for handling and compiling the UI built via the UI Flip UI Builder5,259MIT Embedded development GUI static-cow`Cow` at the type level: a framework of traits for writing types that are generic over ownership of their contents.5,259Apache-2.0 WITH LLVM-exception Memory management No standard library placement-new-deriveCommon utilities to implement "placement-new"5,256MIT Memory management No standard library json-feed-modelJSON Feed model5,254MIT OR Apache-2.0 Encoding No standard library signature-flowTraits for cryptographic signature algorithms (e.g. ECDSA, Ed25519)5,254Apache-2.0 OR MIT Cryptography No standard library microflowA robust and efficient TinyML inference engine5,251MIT OR Apache-2.0 Embedded development No standard library mpr121-halMPR121 proximity capacitive touch sensor controller hal driver implementation.5,250MIT OR Apache-2.0 Embedded development Hardware support completion-coreCore traits and types for completion-based asynchronous programming5,250MIT OR Apache-2.0 Asynchronous No standard library rsa_heaplessPure Rust RSA implementation - heapless fork5,248MIT OR Apache-2.0 Cryptography No standard library e-ringA no_std append only ring buffer, when full new element replace oldest one5,247MIT Data structures Embedded development mini-macro-magicExport tokens to other modules and crates. Now with 100% less proc macros!5,242MIT OR Apache-2.0 No standard library No standard library::No dynamic allocation epd-spectraDriver for Spectra EPDs from Pervasive Displays Inc5,235MIT Embedded development No standard library rs_shieldA comprehensive Rust library providing robust and efficient implementations of cryptographic hash functions including SHA and…5,233GPL-2.0-only Algorithms Cryptography ord-by-setA library providing a weakly ordered multi-set with compile-time configurable ordering scheme5,230MIT Algorithms Data structures vmemVmem is a resource management system theorized by Jeff Bonwick and Jonathan Adams in *[Magazines and Vmem: Extending the Slab…5,227MIT OR Apache-2.0 Memory management No standard library sparse-interpBasic univariate polynomial arithmetic and sparse polynomial interpolation.5,2260BSD Algorithms Mathematics randuRANDU MCG65539 is IBM System/360 random number generator5,226Unlicense OR CC0-1.0 Algorithms Mathematics platform-millisplatform-millis is the generic trait of milliseconds counter for embedded-nano-mesh crate5,224non-standard Date and time Embedded development smartpollA 'Task' abstraction that simplifies polling futures.5,224MIT Asynchronous No standard library snes-bitplanesDecoder for the Super NES's bitplanes graphics5,222MIT Encoding Multimedia::Images as_any_minA minuscule rust library that allows trait objects to be easily upcast to Any5,222MIT No standard library lluaLow level bindings to Lua5.45,220MIT API bindings No standard library keyedImplement comparison traits by specifying a key.5,218MIT Data structures No standard library isrcISRC (International Standard Recording Code) parser library.5,216Apache-2.0 OR MIT No standard library No standard library::No dynamic allocation vl53l1x-uldLibrary source port of the ULD driver for the VL53L1X5,215MIT Embedded development No standard library si70xxSi70xx series relative humidity and temperature sensor driver5,215MIT OR Apache-2.0 Embedded development Hardware support sunsetA SSH library suitable for embedded and larger programs5,2120BSD Embedded development Network programming jrk-g2A rust embedded driver for pololu Jrk G25,209BSD-2-Clause Embedded development Hardware support axpyMacro for auto-vectorizing n-ary linear combinations5,209MIT OR Apache-2.0 OR BSD-2-Clause No standard library Rust patterns pico-tflmicro-sysRust bindings of TensorFlow Lite for Microcontrollers for Raspberry Pi Pico5,203MIT API bindings Computer vision xtensa-lx106-rt-proc-macrosAttributes re-exported in `xtensa-lx106-rt`5,203MIT OR Apache-2.0 Embedded development No standard library error_logSimple, struct-based Error-Handling5,198 Apache-2.0 No standard library Rust patterns anti-rA spatial data structure outperforming r-trees for low numbers of elements5,192Apache-2.0 Algorithms Data structures gc9a01aSPI driver for the GC9A01A LCD display controller5,190MIT OR Apache-2.0 Embedded development Hardware support xrpl-hooksXRPL Hooks API5,186MIT Cryptography::Cryptocurrencies No standard library adi-adxl355An embedded-hal driver for the ADXL355 accelerometer5,185Apache-2.0 Embedded development Hardware support core3The bare essentials of std::io for use in no_std. Drop-in successor to core2. core2 alternative with some additional utils.5,181Apache-2.0 OR MIT Embedded development No standard library prompt-rustA library providing a simple input macro for Rust, similar to Python's input().5,166MIT Command-line interface Development tools::Testing blk_count_macroA simple macro for counting a number of comma-separated tokens at compile time5,165MIT No standard library Rust patterns kolbenA collection of COBS5,164MIT OR Apache-2.0 Embedded development Memory management systick-timer64-bit SysTick timer for Cortex-M05,164Apache-2.0 Embedded development Hardware support multiconstdestructures an expression into multiple constants5,162Zlib No standard library efm32hg222f64Peripheral access API for SiLabs EFM32HG222F64 microcontrollers5,161MIT OR Apache-2.0 Embedded development Hardware support mcxn947-pacPeripherals Access Crate for NXP mcxn9475,159MIT Embedded development No standard library freertos-sysBuilds FreeRTOS from source for specific device families and provides easy linking5,157BSD-3-Clause Embedded development Hardware support nyoom-jsonA json serializer that goes nyoom.5,157MIT Encoding No standard library try-dropBatteries included error handling mechanisms for drops which can fail5,156MIT No standard library Rust patterns stm32u5Device support crates for STM32U5 devices5,155MIT/Apache-2.0 Embedded development No standard library sevseg_3642bsDriver crate for the 3642BS seven segment display5,153MIT OR Apache-2.0 Embedded development No standard library consume-iteratorConsume any iterator fully5,153MIT No standard library No standard library::No dynamic allocation quectel-bg77Driver for Quectel's BG77 and BG770 eMTC and NB-IoT Modems5,152OLFL-1.3 Embedded development Hardware support trait-castGet your own Any with support for casting to trait objects.5,148MIT OR Apache-2.0 No standard library Rust patterns cmosA utility to read, write CMOS and RTC data. Standard library not required.5,143MIT Date and time Embedded development efi_ffiA foreign function interface to UEFI5,140MIT API bindings No standard library minhash-rsA Rust implementation of MinHash trying to be parsimonious with memory.5,140MIT Algorithms No standard library serde_jsonc2A JSON(C) serialization file format (fork of serde_json)5,138MIT OR Apache-2.0 Encoding No standard library flocoFloco validates floats against constraints.5,137MIT OR Apache-2.0 Data structures Development tools axinputInput device management for ArceOS5,131GPL-3.0-or-later OR Apache-2.0 OR MulanPSL-2.0 No standard library Operating systems microcrates-bytesTypes and traits for working with bytes (with no_std support by default)5,127MIT/Apache-2.0 Data structures Network programming ax-crate-interfaceProvides a way to define an interface (trait) in a crate, but can implement or use it in any crate.5,123Apache-2.0 Development tools::Procedural macro helpers No standard library for_each_repeat`Iterator::for_each` that can repeat current iteration5,119non-standard No standard library Rust patterns tallocA fast, consistant, and flexible `no_std`-compatible allocator.5,118MIT Embedded development Memory management unsafe_listLinux 风格侵入式双向链表5,114Apache-2.0 Data structures No standard library usbd-blasterUSB Blaster for Embedded Devices5,107MIT OR Apache-2.0 Embedded development No standard library max44009Platform-agnostic Rust driver for the MAX44009 ambient light sensor.5,105MIT OR Apache-2.0 Embedded development Hardware support swimmingDive into Efficiency with Swimming: A High-Performance, No-Nonsense Connection Pool5,104MIT OR Apache-2.0 Asynchronous Concurrency esp-tm1637Yet another platform agnostic driver for a LED-display powered by TM1637 chip5,104MIT OR Apache-2.0 Embedded development Hardware support fibonacci-likeA small crate to help you interact with second order sequences, such as the Fibonacci sequence, with no_std support5,102MIT/Apache-2.0 Algorithms Mathematics seqidSequential ID generator traits with some default implementations5,099MIT OR MPL-2.0 No standard library No standard library::No dynamic allocation minicoroutinemini coroutine library in rust5,099Apache-2.0 Asynchronous Concurrency snap-bufA copy on write byte buffer for efficient snapshotting5,098MIT OR Apache-2.0 Concurrency Data structures crankit-imageAn ergonomic image API for the playdate5,097Unlicense API bindings Game development laxcowClone-on-write smart pointer with relaxed trait constraints5,096MIT OR Apache-2.0 No standard library Rust patterns aarch64-arch-helpersHelper functions to access aarch64 CPU registers5,094MIT Embedded development No standard library iradixA generic, persistent (copy-on-write) radix trie with structural sharing — bring-your-own-key, no_std + alloc, parameterized over…5,094MIT OR Apache-2.0 Concurrency Data structures hv-stampedeBumpalo-based arena allocation utilities for Heavy5,092MIT OR Apache-2.0 Concurrency Memory management alloc-fmtFormatting utilities safe for use in an allocator.5,092Apache-2.0/MIT Memory management No standard library typemap-meta-deriveA simple compile-time macro to create type-to-value maps, derive macro crate5,088MIT OR Apache-2.0 Memory management No standard library newtype-enumTraits to convert between enums and their variant types.5,088MIT OR Apache-2.0 No standard library Rust patterns alarmoProvides a convenient API to bootstrap firmware and access peripherals on the Nintendo Alarmo5,088MIT OR Apache-2.0 Embedded development Hardware support filterKalman filters and other optimal and non-optimal estimation filters in Rust.5,087MIT Algorithms No standard library eosio-scale-infoInfo about SCALE encodable Rust types5,087Apache-2.0 Encoding No standard library can-bit-timingsThis is a procedural macro to calculate CAN bus timings5,079MPL-2.0 Configuration Embedded development splinosaurusflexible spline and surface library5,076GPL-3.0 Mathematics No standard library pallocportable linked-list allocator for baremetal systems5,076non-standard Embedded development Memory management unique-rcUnique owner Rc, like Box, can Send and DerefMut5,074MIT Concurrency Data structures lpc55s6x-halHardware Abstraction Layer (HAL) for the NXP LPC55S6x ARM Cortex-33 microcontrollers5,069Apache-2.0 OR MIT Embedded development No standard library yash-executorsingle-threaded concurrent task executor5,067MIT OR Apache-2.0 Asynchronous Concurrency smolappsA collection of application-layer protocols built on top of smoltcp.5,065MIT OR Apache-2.0 Embedded development Network programming struct_as_arrayA Rust library that allows you to represent the structure as an array5,063MIT No standard library crev-ed25519-dalekFork of ed25519-dalek for `crev` (until mainline is usable for us again).5,061BSD-3-Clause Cryptography No standard library lsm6dsoA platform-agnostic driver for the LSM6DSO 6-DoF Accel + Gyro IMU5,052MIT Embedded development Hardware support stm32f3-copterustDevice support crates for STM32F3 devices5,047MIT/Apache-2.0 Embedded development No standard library itoa-constFast integer primitive to string conversion5,047MIT OR Apache-2.0 No standard library Value formatting ht32f1yyyDevice support crates for HT32F1YYY devices5,045MIT/Apache-2.0 Embedded development No standard library rand-sequenceA no-std crate for generating random sequences of unique integers in O(1) time.5,044MIT OR Apache-2.0 Algorithms No standard library construeCompile-Time Growable Array: Vec & String for const!5,043GPL-3.0-or-later Data structures No standard library chacha8randReproducible, robust and (last but not least) fast pseudorandomness5,041MIT OR Apache-2.0 Algorithms No standard library nrf52840-dk-bspBSP for the nRF52840-DK5,035MIT OR Apache-2.0 Embedded development Hardware support spl_toolPort of StarFive's C spl_tool with default support for VisionFive25,031GPL-2.0-or-later Embedded development Hardware support bern-unitsBase types for bern-kernel.5,031MIT Embedded development No standard library peach_profilerA performant, low-overhead instrumentation-based profiler. Just peachy.5,027MIT OR Apache-2.0 Development tools Development tools::Profiling fbd_sequencerA sequencer for playing music using PSG or AY-3-8910 sound sources. Supports playing .fbd sequence files.5,021MIT OR Apache-2.0 Multimedia No standard library search_treesUtilities for binary search tree, red-black tree, and AVL tree.5,020MIT OR Apache-2.0 Algorithms No standard library k210-halHAL for K210 SoC5,017ISC Embedded development Hardware support flatfsA readonly filesystem.5,016MIT OR Apache-2.0 Filesystem No standard library const-decoder2Constant functions for converting hex- and base64-encoded strings into bytes5,013MIT OR Apache-2.0 Encoding No standard library ax-kspinSpinlocks used for kernel space that can disable preemption or IRQs in the critical section.5,013Apache-2.0 No standard library Operating systems esp-hostedSupport for the ESP-Hosted firmware, with an STM32 host.5,007MIT Embedded development Hardware support hv-guarded-borrowTraits and implementations for generic use of "guarded" borrows4,999MIT OR Apache-2.0 Concurrency No standard library rmodemXMODEM (and variants) implementation in no-std Rust4,999AGPL-3.0-or-later Embedded development Network programming objrs_frameworks_metalBindings for Apple's Metal framework.4,997Apache-2.0 OR MIT OR MPL-2.0 API bindings External FFI bindings s32k144evb-quickstartTemplate for getting started with development on the NXP s32k144evb evaluation board4,996MIT OR Apache-2.0 Embedded development Hardware support bevy_save-erased-serdeType-erased Serialize and Serializer traits4,995MIT OR Apache-2.0 Encoding No standard library soil_moisture_halModule for the esp32 series, soil moisture sensor hal. was tested on esp32-c6 and soon on esp32-c34,994MIT OR Apache-2.0 No standard library